"His mindset when purchasing the product was thinking about having sex with a woman. It never entered his mind that the product contained a steroid derivative. He admitted he did not look at the label."

Merritt was reportedly devastated when he found out what had caused his positive tests.

The ruling added: "He testified that his heart sank. He thought how stupid he had been. Rather than hiding his fact Mr Merritt announced it to the world, recognising the humiliation that would soon follow, and immediately informed Usada."

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